/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraGraph.h
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)() struct FNiagaraGraphParameterReference
bool
bIsUserFacing
If false then it is just a technical reference (e.g. setting the default value)
FGuid
Key
TWeakObjectPtr<...
Value